Aeroplane.



0. mAh/IBR.` ABROPLANB.

` 988,1 1 3, Patented Mar.28 ,1911.

4- SHEETS-SHEET 1.

C. KRAMER.

AEROPLANB.

APPLICATION FILED APBJI, 1910.

WITNESSES G. KRAMER. AEROPLANB, APPLICATION FILED APR.7, 1910.

Patented Mar. 28, 1911,

4 SHEETS- SHEET 3y Patented Mar. 2a, mi.

4 SHEBTSSHEET 4.

C. KRAMER.

AEROPLANE.

APPLICATION FILED APRH?. 1910.

I tudinal bar 52 and connected- 54 are coiled sprin alI connected vto the outer ends of these linis are pivoted arms 43, the outer Iends of said arms being curved, as at 44. Pivotally connected tothe arms 43, as at 45, are piv- .oted links 46 and the upper ends of these links are pivotally connected to arms 47 similar tothe arms 43. The arms 47 are pivotall connected to the lower ends of pivoted -linis48 similar to the'links 46, and the upper ends of'thellinks 48 are pivotally connected, as at 49, to pivoted. arms 50 similar' to 'arms 43 and 47, thus providing three sets of oppositely ldisposed curved arms and the arms are adapted to sup ort pieces of 'canvas 51 or other materia constituting The links 48 lare connected y to thisA bar conti ous to the ends thereof are plun ers 53 a apted'to extend into vertical soc ets 54 mounted upon the platform 26. The lower ends of the lungers 53 are reduced, as at 55, and are a apted to extend through the platform 26. ncirclm ends 51/of the plungers 53 wit in the sockets 55. Connected to the "bar 52 is a depen ing stirrup 56 and connected to said stirrup is an actuating rod 57 adapted to extendv downwardly through lplanes will thev platforms 26 and 25.

An operator located upon the platform 25 can start .the engine 35 and when the ropeller 39 is revolved the machine will be riven forward and can be guided either to the right or left vthrough the medium of the hand wheel 30,' shaft 28, sheave 29, cable 31, and the ,vertical rudder 19. When the vertically-disposed rod 57 is reciprocated by the operator, two sets of oscillatory frames will be moved to raise the machine from the ground, and by making the bearing 40 a greater hei ht than the bearing 41, these tilted rearwardly, conse uently when the machine is in motion it wi l have a tendency to ascend. These lanes also cooperate with thehorizontal p anes in main-A taining the stability of the machine in'flight',

l planes raised to' and with the superimposed planes in practically a horizontal position, a lar e su porting area/ is j almost a vertical position the additional. supporting area is reduced and it isin this manner that the elevation of the machine when soaring or gliding can v imposed' oscillatory planes,

be easily regulated.

From the foregoing itv will be observed that I have devised a machine embodying a cent/ral rectangular structure for the operator, laterally rejecting bi-planes, a rearwardly projecting tail-and rudder, vsuperall coperating to provide -a light and durable structure that can be safely manipulated. In the drawing I have illustrated the pre erred embodiment-of my invention, but

by `.a longi- 1 the reduced :within said tail at' the provided, while Vwith t e.

superimposed sets of oscillatory planes arranged'above said structure and adapted t0 be oscillated from within said structure, said oscillatory planes having connections constructed upon the principle'of lazy tongs.

ture, laterally proje'cting-fbivplanes cal'riedb'y"v the sides of said structure,

tail carried -by said structure, a vertica rudder supported by said tail and adapted to be adjusted from within said structure, superim sed sets of oscillato planes arranged a ve said structure an adapted to be oscillated from withinv said structure, and a revo'luble propeller arranged rear side ofasaid structure. Y

3. An 1 aeroplane embodying a rectangular structure, bi-planes supported'by the. sides thereof, sets of superimposed oscillatory lanes varranged above said structure and aving connections constructed upon the principle of lazy tongs, arevoluble propeller supported by said structure, and means within said structure Vfor revolving said prof peller. t I 4. The combination `with an aeroplane of the bi-.plane construction', of two sets `of oscillatory planes ed above said structure, the planes of each set being superposed 'with respect to each other,-means oonstituting two4 pairs of la 'otally connecting the oscil gether, and vertical] disposed means con'- nected with said 4oscil atory planes for maintaining them in, parallel planes.

5. In an aeroplane, .the combination of a rectangular structure, latemll biplanes` carried thereby, projectingtail supported by and a planes arranged over said otally connected together, having an inclined inner portion and a substantially flat outer portion, said .planes arranged in sets and with the planes ofone set projecting in opposite directions with respect to the planes of the other set, and means for shifting the planes of the set simultaneously. v

tongs for pivatory planes t0- a rearwardly said structure,

structure and piveach of said planes y projecting' series of superimposed oscillatory rectangular structure biplanes carried there jecting tail supported laterally pro'ecting y, a rearward y proby said structure, and

a series of superimposed oscillatory planes arranged over said structure and lpivotally connected together, eachofsaid planes hav-v ing l:an inclined'inner portion and a Tsub- 5 rstantially flat outer portion, said planes ar- -ranged in sets and w1th`the planes of one set projecting in opposite directions with respect tothe planes of the other set, means for shifting the lplanes of thc set"smu1 Lo taneously, anda rudder carried -by said tail andfadapted to be actuated from Within the structure. '1 n -l 7. In an aerop ane, the combination ofa rectangular strncture, laterally-projecting l5 biplanes carried thereby,y a rearwardly prowithin .the structure, two sets of oscillatory planes arranged above said structure, means for pvqtally connecting said planes together and to said structure, said means operating .upon the'iprinciple of lazy tongs, and means r m Within the structure for shiftoperated ing the osci latory' planes.

In testimonywhereof Iaix my signature in the presence of two witnesses.

` CHARLES KRAMER. Witnesses: f

MAX I-I. SRoLovrrz, 4 K. H. BUTLER.

l Gopiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patents, f Washington, D. C. 

